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Assessment of muscle activity by surface electromyography in reflex locomotion according to Vojta
Pochmanová, Lucie ; Nováková, Tereza (advisor) ; Martínek, Milan (referee)
Title: Assessment of muscle activity by surface electromyography in reflex locomotion according to Vojta Objectives: The aim of this thesis is to summarize the existing knowledge on the objectification of the effects of Vojta reflex stimulation. It is also aimed to verify whether there is a higher muscle activity in selected muscles (m. rectus abdominis, m. biceps brachii, m. tibialis anterior) during Vojta chest zone stimulation compared to placebo stimulation. Subsequently, the mean muscle activity relating to maximum voluntary contraction (MVC) for all selected muscles during stimulation was compared. Furthermore, muscle activity related to MVC in the first and last minute without stimulation was also recorded with surface electromyography (sEMG) and was later assessed. Methods: The sample consisted of female university students in the age range of 18-26 years. Muscle activity measurements were performed on a Trigno Delsys instrument with EMGworks Acquisition software. The MVC of selected muscles was measured for each subject, and also the other researchers whose studies were running in parallel with this work were performed. EMG signal measurements were performed not only during placebo stimulation and stimulation according to Vojta, but also in the first and last minute without any...
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Manufacturing of the electric motor cover
Kolář, Zdeněk ; Svoboda, Petr (referee) ; Císařová, Michaela (advisor)
The bachelor 's thesis focuses on the design of the production of an electric motoro cover made prom low-carbon steel 11 305 with a thicnkess of 1,5 mm. For an annual production series of 100 000 pieces per year, the technology of deep drawing without wall thinning has been selected. In the practical part, it was found that the cover body can be produced in a single drawing operation. The blank diameter, increased by the trimming allowance, is 212 mm, which will be produced by cutting from coils with a width of 222 mm and a outer diameter of 1200 mm. Total fore of 249,18 kN includes the drawing component, holder and ejector. Production is carried out on the CUPJ 63 DEU hydraulic press from HŠV Polička, equipped with a lower hydraulic device. Deep drawing die is designed for the machine, which enables the production of the cover body in one drawing operation. Design is supplemented with a detailed assembly procedure. Lubricant MORLAUB KFP 61 V is used for optimal process condition.
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Human-machine collaboration - using haptic device
Kotrba, Tomáš ; Parák, Roman (referee) ; Juříček, Martin (advisor)
The bachelor's thesis focuses on the integration of the SpaceMouse Module haptic device with the collaborative robotic arm UR3 CB3 through the development of a software application in Python. The aim is to create software that enables smooth communication between these devices and implements methods for processing and filtering signals obtained from the SpaceMouse. The theoretical part includes the basics of collaborative robotics and haptic technologies, explaining their principles and describing the current state. The practical part details the process of integrating the UR3 cobot and the SpaceMouse haptic device. It presents the results of experiments in selecting a suitable filter for data filtering from the SpaceMouse.
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Manufacturing of Motorcycle Sprocket
Hrazdíra, Michal ; Podaný, Kamil (referee) ; Řiháček, Jan (advisor)
The work focuses on the production of a motorcycle sprocket, which transfers the torque from the output shaft of the gearbox to the rear disk of the wheel. Steel 12 050 was chosen for the production of the component, which is suitable for the intended purpose. The sprocket, produced in a series of 80,000 pieces per year, has a diameter of 191.9 mm and a thickness of 5 mm. After considering all factors, fine blanking with v-ring was selected as the manufacturing method. For this series, a semi-finished product in the form of a coil was chosen, which has an outer diameter of 1,400 mm and a width of 204 mm. For the annual production batch, 59 full coils and one incomplete coil will be required. Before the actual tool design, technological and control calculations were performed to verify the functionality of the proposed cutter. The tool was supplemented with technical documentation and a detailed description of the construction. Based on the calculated values, a triple-action hydraulic press Feintool HFA 11,000 plus was designed, which is part of the production line, which also includes decoiling and straightening equipment.
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Automated trading systems
Šafář, Vítězslav ; Hříbek, David (referee) ; Rozman, Jaroslav (advisor)
Trading in the financial market is something almost everyone has heard of these days, but automated trading is still a novelty for most. The aim of this bachelor's thesis is to design and create several automatic trading systems using the application programming interface provided by XTB, and subsequently evaluate these automated trading systems using historical data. The thesis presents four differently complex automated trading systems, achieving various profits at certain risk levels. Furthermore, the thesis demonstrates the usability of the mentioned XTB application programming interface. The best-designed system evaluated was the one utilizing the MACD indicator,which achieved an average annual return of around 13.5 % with a level of risk of loss, approximately 39 %.
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Concentration of magnetic flux at microscale
Střecha, Jan ; Wojewoda, Ondřej (referee) ; Staňo, Michal (advisor)
Magnetic concentrators are used to amplify the detected field by magnetic sensors or as cores in coils to direct the magnetic field. This work focuses on magnetic field concentrators at the microscopic scale and aims to design various metamaterials and geometries that could be used to enhance the magnetic field. The simulations use the program Mumax3, which employs the finite difference method and discretizes space into small cuboids to solve the time dependence of magnetization. Initially, the "petal" geometry was investigated, with a concentrator diameter of 5 m, and the simulated amplification value was determined upon applying an external field. Subsequently, metamaterials made of permalloy NiFe were created from the initial petal shape, consisting of small equilateral triangles with a size of less than 0.5 m, varying the distance between individual elements and their thickness. A petal with a thickness of 15 nm achieves an amplification of 2, while the examined geometries achieved amplifications of less than 1.2 for the same thickness. The results that achieved the highest value, around 1.8, were for thicknesses of 60 nm.
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A review study of dental mini-implants
Pernický, Vojtěch ; Hrubanová, Anna (referee) ; Marcián, Petr (advisor)
This thesis focuses on the study of dental mini-implants, which are becoming a popular choice for replacing missing teeth and retaining overdentures. The insertion of mini-implants is a less invasive procedure that minimizes damage to bone tissue, which shortens the patient's recovery time. One of the key advantages is the possibility of immediate loading of the implant. However, the smaller diameter of these implants means a smaller surface area for osseointegration, which can negatively affect their stability and functionality. This thesis deals with the analysis of deformation and stress states by using computational modeling. The results of this analysis are compared with standard implants to evaluate the mechanical behaviour of mini-implants and their interaction with bone tissue. Based on the results of the analysis, it can be said that the diameter of the implant significantly influences its deformation-stress states.
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Manufacturing of the wheel center cap
Jiřánek, Jakub ; Štroner, Marek (referee) ; Císařová, Michaela (advisor)
The bachelor´s thesis deals with the production of a protective rotary wheel center cap for the hub shaft of a car. It is made of steel 11 320 and the production volume has been set at 120 000 units per year. Among the possible manufacturing technologies, deep drawing was chosen as the most suitable. The diameter of the blank from which the cover is drawn was determined by calculation to be 110 mm. The number of drawing operations was calculated to be one. The total force required for the manufacture of the component was calculated to be 85 kN. According to decisive criteria, a single-acting hydraulic press CUPS 16 DEU from HŠV Polička was chosen, for which a drawing tool was designed. Finally, drawing documentation was created for the cover, assembly of the tool with the die, punch, blank holder and the body of the blank holder.
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Biomimetics and its Incorporation into High School Teaching through Learning Tasks
Suldovská, Eva ; Říhová, Dagmar (advisor) ; Pavlasová, Lenka (referee)
The main aim of this thesis was to create and practically test four sets of complex learning tasks intended for pupils in the second year of high school. The tasks are focused on the development of science literacy using the topic of biomimetics. The starting point for the development of the learning tasks was a literature review dealing with topics of biomimetics, subject integration, science literacy and learning tasks. Biomimetics is a multidisciplinary science based on the observation of nature and searching for inspiration in nature in order to find solutions to problems that people face in life. Due to the topicality, practical overlap and interdisciplinary nature of this field, the topic of biomimetics is an excellent tool for applying integrated learning concepts (e.g. STEM concept) into teaching or for developing science literacy. In this work, created complex learning tasks containing three subtasks each were validated in three second-year classes of selected high schools. The pupils' responses to the created tasks and the responses from the attitudinal questionnaires were analyzed using mixed research methods. Statistical methods (arithmetic mean, relative frequency, success rate) were used for quantitative evaluation. The method of inductive analysis of written gathered data was used...
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Government expenditure on education
ŠMEJKALOVÁ, Eliška
The bachelor thesis deals with government expenditure on education in the Czech Republic. Education is characterized as a publicly provided good. The thesis discusses the reasons why it is appropriate for the state to finance education from public budgets. It classifies education in the Czech Republic and describes the method of public financing of education. The data sources are mainly values from the OECD statistical database. An important part of this thesis is an analysis of the level and dynamics of government expenditure on education in international comparison. The comparison of government expenditure on education is made by several indicators, such as government expenditure on education expressed as a proportion of GDP, government expenditure on education per capita, government expenditure on education expressed as a proportion of total government expenditure and percentage comparison of public and private sector financing of educational institutions. The results of the analyses show that the Czech Republic's government expenditure on education is lower than the average of OECD countries. An important part of the thesis is the search for a link between government expenditure on education and the Better life index. This index allows for a comparison of well-being across countries based on eleven indicators that the OECD considers essential in terms of living conditions and quality of life. When we compared the Czech Republic's position in the Better Life Index values for the education indicator variable, we concluded that the Czech Republic was higher in the Better Life Index education scores than in the analyses of government spending on education. A correlation analysis was used to find the relationship between the level of government spending on education and some of the Better life index indicators, namely the indicators of years in education, quality of support network and life satisfaction.
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